Machine for tying tubular fabrics



Aug. 18, 1925.

s. coHN MACHINQFOR TYING TUBULAR FABRICS Filed Jan. 2. 1923 3 Sheets-Sheet z I l I I L.

BY W

ATTORNEY s. COHN MACHINE FOR TYING TUBULAR FABRICS Filed Jan. 2. 1923 a Sheets-Sheet Es JANA/Z /6 W101i ATTORNEY Patented Aug UNITED STA SAMUEL GOHN, OF NEW YORK, N. Y.

MAGI'lINE FOB, TYING TUBUL R F BR CS. i

Application filed January 2, 1923. Serial No. 610,311.

To all whom it may concern."

Be it known that I, SAMUEL COHN, a citizen of the United States, and a resident of the borough of Bronx, in the city and State of New York, have invented certain new and useful Machines for Tying Tubular Fabrics, of which the following is a specification.

My invention relates to a machine by means of which tubular members may be tied with a string, cord or tape, and while there may be many uses for my machine I find it very useful for tying the tubular fabrics from which incandescent gas mantles are made. Heretofore, it has been customary to close the ends of the tubular fabrics for gas mantles by placing a shirring string in one end of the fabric and around the tube and to then draw up the shirring string to draw the end of the tube closed, with regular plaits where the fabric is compressed; and to then tie the shirring string. In United States Patent No. 898,437 I showed a method of shirring the tubular fabrics which has proven satisfactory for the purpose. a

The object of this invention is to simplify the closing of the end of the tubular fabric by eliminating the shirring operation. This'is accomplished by providing a device by means of which a string, cord or tape may be placed around the tubular fabric at any desired distance from the end thereof and the loop of this string, cord or tape may be drawn up or closed upon a yielding or folding support in such manner,

that the fabric will be gathered evenly by it and when the fabric has been drawn together sufficiently the cord is tied, the support casting off the fabric and cord so that the final tie may be made with nothing inside the tubular fabric. Thus, the opera tion of closing the end of the tubular fabric for a mantlev or other object may be reduced to the simple operation of placing the cord around it in a loop and in drawing the loop a closed and tying it. The mantle made in this manner will be just as serviceable as one made on the shirring machines, and in fact, it is more durable in some respects because in the shirring process the needles often penetrate the thread of, the knitted I fabric and thus weaken itan'd pull or" di tort it.

fabric at first and so holding it that the cord loop may be placed evenly around the fabric. This holder is then adapted to contract as the cord loop isdrawn closed, and finally the holder is released from the fabric about the time the operation is completed, so that the fabric may be completely closed and the knot in the cord completed to permanently retain the end of the fabric closed. r i

The present device is also adapted for use in making mantles of the inverted type where one end is attached to a lava frame and wherethe other end is inverted for the closing operation. r

In the drawings forming part of this application,

Figure l is an elevation of a machineembodying one form of my invention,

Figure 2 is avplan view of one of the plates on which the closing fingers are mounted, c

Figure 3 is a vertical sectional view of the parts for holding the fabric While the cord is being applied and showing the parts in position to receive the fabric,

Figure 4. is a similar view showing the positions of the parts at about the time, the fabric is thrown off by the fingers,

Figure 5 is a perspective view of one of the releasing fingers, v

Figure 6 is a detail View of part of, the device showing how a mantle is placed in position ready for tying,

Figure 7 shows the same parts just as the mantle is being cast olf from the fingers,

Figure 8 shows the mantle completely cast off andthe tie completed, and

Figure 9 is a detail view on a large scale of the completed mantle.

I have shown the machine operated by means of a treadle l which is pivoted to the bench 2 at 3. There is a pit'man pivoted. at- 5 to this treadle and it operates a lever pivoted at 'Z to a bracket 8 on the bench or table. There is shown a spool 9 cord mounted on an arbor 10 in the bracket 11, in. convenient position for the operator to take the cord for purposes.

There is a vertical shaft fixed in the bracket 8 and. surrounding this shaft 1s vertically the-"see tha is a l ve 13 having a groove 14 in which the pin 15 on one end of the lever 6 engages for the purpose of raising and lowering the sleeve. The spring 16 tends to raise the treadle 1 and depress the sleeve 13.

The sleeve 13 carries a cone shaped plate or disk 16, and the sleeve 17 carries a similar disk 18 arranged above the first one, the disk 16 being attached to the sleeve 13 by the screws 19 and the disk 18 being attached to the sleeve 17 by the screws 20. There is a coiled spring 21 surrounding the shaft 12 which tends to force apart the disks 16, 18. The rods 22 serve to prevent the disks from separating beyond a certain limit. There is a cone shaped block or head 23 attached to the shaft 12, as by the screw threaded en gagements 24.

This head has a number of radial grooves 25 in its outer surface which receive and guide two kinds of fingers. The fingers 26 which lie in some of these grooves, have grooves or notches 27 in their upper ends, and lateral projections 28 extending outwardly near the bottoms of these notches.

The fingers 29 lie in alternate grooves 25 in the head with respect to the fingers 26 and they merely have the lateral projections 30 and no notches. The lower ends of the fingers 26 project through radial slots 31 in the disk 18 and they each have a roller 32'above the disk 18 and a roller 33 below this disk, so that the fingers 26 will partake of any vertical movement of the disk 18 but they are free to follow the inclination of the head 23.

The lower ends of the fingers 29 project through radial slots 34 in the disk 16, and they each have a roller 35 above the disk 16 and a roller 36 below it, whereby these fingers will partake of any vertical movement of this disk but they are free to follow the inclination of the head 23.

There is a weighted ring 36 having a conical bore 37, which ring fits over the head 23 and all the fingers and serves to keep the fingers in their respective grooves in the head.

There is a collar 39 which is adjustable in position upon the shaft 12,- by means of a set screw 40 and the purpose of this collar is to form a stop or rest for the sleeve 13 to limit its downward movement.

Operation: It will be understood that the present device may be used for tying any compressible tubular article but in the drawings I have shown it used for tying the free end of a gas mantle of the inverted type. This mantle 41 has previously had one of its open ends tied to a lava ring 42 as by means of the device shown in my Patent No. 918,012. The other open end 43 of the fabric is inverted or passed downwardly, temporarily, through the lava ring preparatory to having this end 43 tied and closed. The

collar 39 will be adjusted on the shaft 12 to the particular size mantle to be handled. For instance, the longer the mantle the lower the collar 39 will be placed on the shaft 12 and vice versa. The lower this collar is placed, the lower will be the positions of rest of the disks, 15, 18 and therefore the lower will be the positions of rest of the fingers 26, 29 and the greater will be their distance from the top of the head 23. The inverted mantle is placed over the head 23 as shown in Figure 6 and the lower end of the fabric will rest on the projections 28, 30 of the several fingers 26, 29. The tying cord 45 is passed around the fabric in line with the notches 27 of the several fingers 26 and the single knot 46 is formed in the cord, and it is drawn up so that the fabric is pressed into the several notches 27 of the fingers 26. The operator now draws on the free ends of the cord to hold the cord loop 47 tight on the fabric and at the same time commences to press down on the treadle 1. This will cause the lever 6 to raise the sleeve 13 and disk 16; and the spring 22 pressed upwardly by the disk 16 will raise the disk 18. At first, therefore, both disks will move upwardly together. As the disk 18 rises it moves the fingers 26 upwardly, these fingers being guided in their respective grooves in the head 23. The disk 16 also raises the fingers 29 which are likewise guided in their respective grooves in the head. At first, the several fingers 26 and the fingers 29 all move alike and as the operator keeps pulling the ends of the cord, the loop 47 presses the fabric into the notches 27 and the lower end of the mantle rises with the fingers. hen the notched or upper ends of the fingers 26 reach a position near the upper end of the head 23 the collar 17 comes up against the fixed collar 38 on the shaft 12 and this prevents the fingers 26 and the disk 18 from rising further as the lever 6 continues to lift the sleeve 13. The disk 16 will continue to move upwardly after the disk 18 has been arrested, and the projections 30 of the fingers 29, which are below the bottom edge of the fabric, move up and cast the end of the fabric off the fingers 26. As the operator is continually drawing on the ends of the cord during and after the fingers 26, 29 are rising, the end of the fabric is gradually contracted by the cord loop 47 as the fingers approach the top of the head. As the fabric is cast off the fingers 26 by the fingers 29 there is then nothing lying inside the fabric and the cord exerts a'final closing pull on the fabric and entirely closes the end thereof. A second knot may then be formed in the cord to retain it permanently on the fabric. The tied end of the mantle is then passed through the ring 42 to bring it right side out as appears in Figure 9.

During this tying operation the fabric is gradually reduced in diameter under the control of. the several fingers lying inside thereof and the fabric is therefore gatheredevenly all around. The mantle Will also be of even length all around, or, in other Words, the bunch Will lie in the axis of the mantle. V

This gatheringand tying operation can be performed much quicker with the present machine than mantles can be shirred, closed and tied under any of the former methods. Furthermore, the cord isentirely around the fabric whereas with the shirring process the needles sometimes pierced right through the thread of the mantle fabric and in such cases the cord Was drawn through the thread, thus weakening the latter.

It will be apparent that my invention is not. limited to the precise form herein shown and described and I desire to cover.

all 'modifications which come within the scope of the following claims.

Having. described my invention, what I claim is 1. A device for tying a compressible tubular body comprising means adapted to receive the compressible body thereover so that said means lies within the tubular body, said means being adapted to be gradually reduced in diameter as a tying cord is tightened around said tubular body and said means and adapted to have said tubular body removed therefrom for the purpose set forth.

2. A device for tying a compressible tubular body comprising means adapted to receive the compressible body thereover so that said means lies within the tubular body, said means being adapted to be gradually reduced in diameter as a tying.

cord is tightened around said tubular body and said means, said means being adapted to have said tubular body cast off therefrom for the purpose set forth, and means for gradually reducing the diameter of said first means.

3. A device for tying a compressible tubular body, comprising means adapted to receive the compressible body thereover, and having grooves into which the tying cord is adapted to press said body, said means being adapted to be gradually reduced in diameterand adapted to have said body cast off therefrom for the purpose set forth.

4. A device for tying a compressible tubular body, comprising means adapted to receive the compressible body, said means being adapted to be gradually reduced in diameter as a tying cord is tightened around said body, and means for casting off the said body from said contracting means.

5. A device fo-n, tying a compressible tubular body, comprising means adapted to receive the compressible body, said means being adapted to be reduced in diameter as a tying cord is tightened around said body,

means 1 for; contracting said contractin means and means for casting said body 0 said contracting meansQ 6. A device for tying a compressible tubular body, comprising means adapted to receive the compressible body, and consisting of converging members adapted to be contracted asa tying cord is drawn around said body, and means for operating said converging members to reduce their diameter at their place of engagement with said body.

7 tubular body, comprising means adapted to receive the compressible body, and consisting of sliding, convergingmembers adapted,

to be contracted as a tying cord is drawn around said body, and means for operatlng said converging members to reduce their,

place of engagement with Av device for tying a compressible receive the compressible body and consisting of sliding, converging fingers against which the tying cord is adapted to press said body, means for sliding said fingers, and means for casting said body off said fingers.

10. A device for tying a compressible tubular body comprising means adapted to receive the compressible body and consisting of sliding, converging fingers, having notches, in which the tying cord is adapted to press said body, other converging, sliding fingers adapted to cast the body off said first fingers andineans for first sliding all of said fingers to contract them and in then further sliding only said second mentioned fingers to cause them to cast said body off said first fingers.

11. A device for tying a compressible tubular body comprising means adapted to receive the compressible body thereover and including a conical head having converging grooves, fingers sliding in said grooves, having means against which the cord is adapted to press said body, means for sliding said fingers, and means for casting said body off said fingers. I

12. A device for tying a compressible tubular body comprising means adapted to receive the compressible body thereover and including a conical head having converging grooves, fingers sliding in certain of said grooves and having notches into which the tying cord is adapted to press said body,

other fingers sliding in certain of said grooves, and adapted to strip off said body from said first fingers, and means for sliding said fingers for the purpose set forth.

13. A device for tying a compressible tubular body comprising means adapted to receive the compressible body thereover and including a conical head having converging grooves, fingers sliding in said grooves and against which the tying cord is adapted to press said body, a detachable ring fitting over said head and fingers for retaining the latter in their grooves, and means for sliding said fingers for the purpose set forth.

14. A device for the purpose set forth comprising means for receiving the compressible body thereover and including a conical head having converging grooves, fingers sliding in said grooves and against which the tying cord is adapted to press said body, and means for reciprocating said fingers including a cone shaped disk for moving'the fingers.

15. A device for the purpose set forth comprising means for receiving the compressible body thereover and including a head having converging grooves, fingers sliding insaid grooves and against which the tying cord is adapted to presssaid body, and means for reciprocating said fingers comprising a cone shaped disk having radial slots through which said fingers project and means on said fingers for engaging 0pposite sides of said cone shaped disk.

16. A device for the purpose set forth comprising means for receiving the compressible tubular body thereover and including a conical head having converging grooves, fingers sliding in said grooves and against which the tying cord is adapted to press said body, and means for reciprocating said fingers, comprising a cone shaped disk having radial slots through which said fingers project, means on said fingers for engaging opposite sides of said cone shaped disk, a second cone shaped disk having radial slots through which other of said fingers project, means on said latter fingers for engaging opposite sides of said second disk, a spring arranged to normally force said disks apart, and means acting on one of said disks for moving both said disks.

Signed at the city, county and State of New York, this 5th day of December, 1922 SAMUEL COHN. 

